** Indian gems and jewellery stocks fall between 1.45% and 4.75%
** Donald Trump launches unfair trade practice probes into 16 key trading partners, including India, to restore tariffs recently struck down by Supreme Court as illegal
** Indian gems and jewellery companies have higher exposure to U.S. markets
** Kalyan Jewellers KALN.NS, PC Jeweller PCJE.NS and Tribhovandas Bhimji Zaveri TBZL.NS fall 1.5% to 2.11%
** Thangamayil Jewellery THNG.NS and Rajesh Exports REXP.NS lose the most - down 4.75% and 4.6%, respectively
** Bluestone BLUT.NS and Titan TITN.NS shed 2.7 and 2.5%, respectively
** BLUT and THNG only stocks among pack to post YTD gains
(Reporting by Urvi Dugar in Bengaluru)
((UrviManoj.Dugar@thomsonreuters.com;))